If you prefer to order a car online, you can use this site. Many hotels offer car rental in Svalyava almost round the clock. This option will be cheaper than if you rent a car not in Svalyava, but in Lviv. But many guests decide to get to Transcarpathia on their own, not depending on transportation, and take a car in Mukachevo or Lviv.
Car rental in Svalyava without a deposit is possible by agreement. Large companies like Hertz, Europcar, Rentalcars give a much higher price for car rental in the regions of Transcarpathia, to the same Svalyava. However, if you want a reliable and trusted car, it is better to focus on such companies. Car rental in Svalyava will cost you quite inexpensively, around 200-250 UAH per day.For a trip, for example, to the surrounding sights, it will be quite enough.